We're dividing 963781 by 78 
The aim is to understand the frequency of 78 in 963781.

Advancing to step 1:
9 divided by 78 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 78

Going ahead to step 2:
If we divide 96 by 78, we get 1 and a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 78 from 96 to get 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 78

Let's proceed to step 3:
The number 78 fits into 183 2 times, leaving a remainder of 27.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 156 from 183 leaves us with 27.
Include the next digit (7) from the dividend after 27, then repeat: 277 / 78

Step 4:
78 can be fit into 277 3 times, resulting in a remainder of 43.
Write down 3 as next digit of the result. 
Result so far: 123.0
If we subtract 234 from 277, we get 43.
Grab the next digit (8) from the dividend, add it to 43, then carry on: 438 / 78

Going ahead to step 5:
78 can be fit into 438 5 times, resulting in a remainder of 48.
Use 5 as the next digit of our solution. 
Result so far: 1235.0
Subtract 390 from 438 to get 48.
Append the next digit (1) from the dividend to 48 and continue with: 481 / 78

On to step 6:
78 goes into 481 6 times with a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 12356.0
Subtracting 468 from 481 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 7:
The number 78 fits into 130 1 times, leaving a remainder of 52.
Use 1 as the next digit of our solution. 
Result so far: 12356.1
If we subtract 78 from 130, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 8:
The number 78 fits into 520 6 times, leaving a remainder of 52.
Put 6 as the next digit of the answer. 
Result so far: 12356.16
If we take 468 away from 520, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 9:
If we divide 520 by 78, we get 6 and a remainder of 52.
Record the quotient 6 as the next digit in the result. 
Result so far: 12356.166
Subtracting 468 from 520 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final result is 12356.166 with a remainder of 0.0052.